Yeah in the hackintosh community, if you want good hardware support, you need to wait 6 to 12 months after the hardware release. 6 months for the OS to come with basic support (ATi/nVidia/Intel), and a possible other 6 months for community support.

I spent a week trying to get it working, I have a cheap as chips 7850 I think it doesn't follow reference design and uses different cheaper components compared to the big brands which is stopping it from working properly.

The only current way of getting around it is by using HD4000 Intel Graphics as primary adapter and 7850 as accelerator but I only have HD2000 on my Sandybridge CPU which isn't compatible with OSX.

* Dock magnification doesn't work. Even if I enable the option in the Dock Preferences applet, just doesn't work. Not sure what that's about!

I know you posted this quite some time ago now but just to check, are you sure you have QE/CI enabled? Easiest way to tell is if the menu bar is translucent or not or if you can see the ripple effect when you add a widget to the dashboard.

If you can't see those then it might explain why magnification is also not working. You might have fixed this now as I see you did a few reinstalls, but just suggesting if you didn't work it out yet.